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Quality scan, great manual. I solved my problem with this manual.
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The AKAI 1720 model reel to reel tape recorder described in this Manual is quite an old unit - circa late 1960's. As a consequence, the description of the mechanical details - and adjustments thereof - is quite critical. The manual does this quite well. The schematics are also well presented and have detailed PCB overlays. Probably the only negative is that some half-tone detail has been lost from the original manual as it has been scanned in simple B&W.
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Perfect source for service manuals: fast and professional transaction; high quality, perfect readable and largely scaleable PDF; complete schemes, diagrams and spare part list. Tnx a lot, cu again!!!!
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I got your link from a friend and I must say that I am really satisfied with your service. Specially this B&O manual I didn't find anywhere on the web... but you could deliver it :-) . You deliver very fast and the copy is of good quality. So your webpage is bookmarked. Thanks
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This was the Sony CCU-500A Service manual I was looking for.
The price was reasonable.
The permission to download was quck.
I will use Owner-Manual.com for all my manual needs.
CTV990503 TELEVISION TECHNICAL BULLETIN
Month of Issue: May 1999 Classification: White Page 1 of 1
MODELS
66AS05H
DV5940H
DV6632H
Common faults on the 4BS-C Chassis
Fault Intermittent tripping Cramping Tripping every five seconds Reason Poor line drive Vertical stage tollerance changes Teletext processor supply pin leaky Possible Cause Q606 C513 open circuit Teletext processor (note that removing the teletext PWB will also result in tripping every five seconds) Dry joints on the scanning coils connections (both ends)
Intermittent failure of the line output transistor
Line stage problems
Disabling of protection circuit To disable the protection circuit, you can remove the opto coupler IC702. However, do be aware that this may cause failure of components if there is a catastrophic fault on the receiver. If you have a fault to add to the above list, please do no hesitate to contact Sharp Technical Support via the Hot Line telephone number.
Sharp Electronics (UK) Limited
Reference AVW280499/3 Revision 1 White � Carry out as required, Yellow � Carry out as required and whenever the unit comes in for service, Red � Carry out on all units
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